CN208364672U - A kind of quasi- zero stiffness earthquake isolating equipment - Google Patents
A kind of quasi- zero stiffness earthquake isolating equipment Download PDFInfo
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- CN208364672U CN208364672U CN201820536656.9U CN201820536656U CN208364672U CN 208364672 U CN208364672 U CN 208364672U CN 201820536656 U CN201820536656 U CN 201820536656U CN 208364672 U CN208364672 U CN 208364672U
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- jackshaft
- cross brace
- disc spring
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- cross
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Abstract
Quasi- zero stiffness earthquake isolating equipment includes disc spring shock insulation mechanism and cross shock insulation mechanism, disc spring shock insulation mechanism includes mounting assembly, intermediate shaft assembly and fluting disc spring, mounting assembly includes the cylindric support outer ring of upper and lower opening, intermediate shaft assembly includes the jackshaft being concentrically disposed in support outer ring, at least one fluting disc spring is set on jackshaft, on the radially inner side insertion jackshaft for disc spring of slotting, radial outside is embedded on support outer ring；Cross shock insulation mechanism includes horizontal and between the upper and lower every upper cross brace, the lower cross brace being correspondingly arranged, in the through-hole for being provided centrally with axis vertical of upper cross brace, the cross end connection corresponding with upper cross brace, lower cross brace respectively of the both ends of four arc spring plates, jackshaft is pierced by the upper surface of upper cross brace upwards out of upper cross brace through-hole, also, the top of support outer ring is connected to the lower section of cross connecting bracket.Make the device that there is vertical and horizontal direction dual isolating affection through the above structure.
Description
Technical field
The utility model relates to technical field of isolation, specifically, being related to a kind of quasi- zero stiffness earthquake isolating equipment.
Background technique
Naval vessel working environment is complicated, there is a large amount of on-board equipments thereon.On the one hand, equipment work when itself generate vibration and
Noise will affect the quietness in cabin and the working environment of instrument, instrument.Especially for naval vessels, influence whether that its is of vital importance
Concealment；On the other hand, resist impacted caused by external attack when, the shock resistance of equipment and resistance to capsizing directly determine
Resist the ability of external attack in naval vessel.Therefore, the vibration control on naval vessel is most important.Mainly have for vibration control actively
Shock insulation, partly actively and passively three kinds of modes of shock insulation, the factors such as complexity and cost are at present passive using being at most mode
Shock insulation.According to Theory of Vibration, it is system frequency that passive shock insulation, which originates effective shock insulation frequency,Times, system frequency
Its lower shock insulation range is bigger, and effect is better.But it for traditional structure, reduces intrinsic frequency and means that reduction system is quiet just
Degree or increase mass of system, so that static system displacement be caused to increase.To overcome the above disadvantages, ideal shock isolation system is answered
It is somebody's turn to do static rigidity with higher and lower dynamic rate (lower dynamic has just meaned lower system frequency) simultaneously,
It bears to guarantee that system frequency is lower while higher load, the shock insulation frequency range of system is bigger, and isolating affection is more preferable.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of quasi- zero stiffness earthquake isolating equipment, including disc spring shock insulation machine
Structure and cross shock insulation mechanism, disc spring shock insulation mechanism include mounting assembly, intermediate shaft assembly and fluting disc spring, mounting assembly packet
The cylindric support outer ring of upper and lower opening is included, intermediate shaft assembly includes the jackshaft being concentrically disposed in support outer ring, until
A few fluting disc spring is set on jackshaft, also, on the radially inner side insertion jackshaft of the fluting disc spring, radial outside
It is embedded on support outer ring；Cross shock insulation mechanism includes horizontal and between the upper and lower every the upper cross brace being correspondingly arranged, lower ten
Word bracket, also, in the through-hole for being provided centrally with axis vertical of upper cross brace, the both ends of four arc spring plates respectively with it is upper
The corresponding cross end connection of cross brace, lower cross brace, jackshaft are pierced by upper ten upwards out of upper cross brace through-hole
The upper surface of word bracket, also, the top of support outer ring is connected to the lower section of cross connecting bracket.
Preferably, mounting assembly further includes support isolation ring and support pressure ring, the bottom end of the support outer ring radially to
Interior shoulder is extended in inside, and support isolation ring and support pressure ring successively coaxially cover in support outer ring from the bottom to top, also,
The first holding tank is formed between the low side of support isolation ring and the upper end of the interior shoulder, top and support in support isolation ring
The second holding tank is formed between the low side of pressure ring, intermediate shaft assembly further includes jackshaft upper press cover and jackshaft lower cover, centre
The 4th holding tank is formed between axis and jackshaft upper press cover, is formed third holding tank between jackshaft and jackshaft lower cover, is opened
Slot disc spring is two, and the radially inner side of a fluting disc spring is arranged in third holding tank, and radial outside is then arranged first
In holding tank, the radially inner side of another fluting disc spring is arranged in the 4th holding tank, and radial outside is then arranged to be held second
It receives in slot.
Preferably, at least one fluting disc spring slotted section height H and thickness t ratio 1.39~1.41 it
Between.
Preferably, the groove of at least one fluting disc spring is radially gradually increased from inside to outside.
Preferably, at least one arc spring plate is also arranged at intervals in the outside of each arc spring plate.
Preferably, the both ends of the arc spring plate of inside be connected to upper cross brace lower end surface and lower cross brace
Upper surface on, the both ends of arc spring plate on the outside are connected under the upper surface and lower cross brace of cross brace
On end face.
Preferably, the both ends of each arc spring plate pass through bolt respectively and spring plate tabletting is connected to cross brace under
On the corresponding cross end of cross brace.
Preferably, the jackshaft upper press cover is the form that upper diameter is less than lower diameter, so that upper part is from described
Through-hole is pierced by the upper surface of cross brace, and its underpart is then blocked in the lower section of cross brace.
Preferably, the jackshaft, jackshaft upper press cover and jackshaft lower cover have the axial hole being sequentially communicated.
The utility model is connected in series using fluting disc spring with the cross brace for being equipped with arc spring plate, this is practical new
Type has the advantages that
1, the utility model is had vertical using the disc spring shock insulation mechanism and cross shock insulation mechanisms in series of fluting disc spring composition
With the dual isolating affection of horizontal direction.
2, the utility model uses fluting disc spring as its core isolation component, the disc spring shock insulation machine being made of fluting disc spring
Structure is further decreased with overall structure rigidity after cross shock insulation mechanisms in series, the frequency of device 4Hz once, can more effectively drop
The nuisance vibration of low on-board equipment.
3, disc spring shock insulation mechanism and cross shock insulation mechanisms in series of the utility model using fluting disc spring composition, disc spring shock insulation
Mechanism makes quasi- zero stiffness earthquake isolating equipment rigidity in low amplitude vibrations very low, there is good isolating affection；Cross shock insulation mechanism can
It is larger with design rigidity, guarantee that overall structure has good impact resistance.
Detailed description of the invention
By the way that embodiment is described in conjunction with following accompanying drawings, the features described above and technological merit of the utility model will
It becomes more fully apparent and is readily appreciated that.
Fig. 1 is the cross-sectional view for indicating the quasi- zero stiffness earthquake isolating equipment of the utility model embodiment；
Fig. 2 is the partial enlarged view of Fig. 1；
Fig. 3 is the floor map for indicating the fluting disc spring of the utility model embodiment；
Fig. 4 is the sectional view along A-A of Fig. 3；
Fig. 5 is the nondimensional displacement-for indicating the fluting disc spring of quasi- zero stiffness earthquake isolating equipment of the utility model embodiment
Load relation characteristic curve；
Fig. 6 is the nondimensional displacement-for indicating the fluting disc spring of quasi- zero stiffness earthquake isolating equipment of the utility model embodiment
Stiffness relation characteristic curve.
Wherein, cross connecting bracket, 2 arc-shaped leaf springs, 4 lower cross connecting brackets, 5 support outer rings, 6 fluting disc springs, 7 on 1
Support isolation ring, 8 jackshafts, 9 jackshaft upper press covers, 10 jackshaft lower covers, 11 intermediate axis connection bolts, 12 support pressure rings,
13 bolts, 14 spring plate tablettings, 15 nuts.
Specific embodiment
The embodiment of quasi- zero stiffness earthquake isolating equipment described in the utility model described below with reference to the accompanying drawings.This field
Those of ordinary skill will recognize, without departing from the spirit and scope of the utility model, can use various differences
Mode or combinations thereof described embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, without
It is for limiting scope of protection of the claims.In addition, in the present specification, attached drawing is drawn not in scale, and identical attached
Icon note indicates identical part.
Term is explained:
Butterfly spring: the washer type bullet in the axial tapered section made of metal blank or forging and stamping blank forging and stamping
Spring.
Slot butterfly spring (hereinafter referred fluting disc spring): fluting butterfly spring is to output on common butterfly spring by interior
Made of outwardly radial groove.With the common butterfly spring ratio of respective diameters, it can generate biggish under lesser load
Deformation, therefore, it combines some advantages of both butterfly spring and cantilever leaf spring.
Rigidity: the ability of structure resistance to deformation in stress.Calculation formula is K=P/ δ, and wherein P represents load, and δ is represented
Deflection；For the system that rigidity changes with deflection, rigidity expression formula is rewritten as K=Δ P/ Δ δ, and wherein Δ P represents load
Variable quantity, Δ δ represent variable quantity.
Quasi- zero stiffness: structure of the system stiffness close to zero.According to stiffness changing structure rigidity defined formula K=Δ P/ Δ δ, when
When displacement structure amount Δ δ changes, if load change amount Δ P is very small, close to zero, the system at this time rigidity close to zero,
Referred to as quasi- zero stiffness system.
Spring stiffness at the end: equivalent stiffness is K1*k2/ (K1+K2) when two rigidity are K1 and the spring of K2 is connected, equivalent
Rigidity is smaller than wherein the smallest spring rate.
Quasi- zero stiffness earthquake isolating equipment includes concatenated disc spring shock insulation mechanism and cross shock insulation mechanism, as shown in Figure 1, disc spring every
Shaking mechanism includes mounting assembly, intermediate shaft assembly and at least a piece of fluting disc spring 6.It is hereinafter in parallel next with two panels fluting disc spring 6
Description.
Wherein, mounting assembly includes support outer ring 5, support isolation ring 7 and support pressure ring 12, and support outer ring 5 is to open up and down
The cylinder of mouth, also, interior shoulder 51 is extended in side radially inward for the bottom end of the support outer ring 5.Support isolation ring 7 and branch
Seat pressure ring 12 successively coaxially covers in support outer ring 5 from the bottom to top, also, in the low side of support isolation ring 7 and interior described
The first holding tank 61 is formed between the upper end of shoulder 51, is formed between the top of support isolation ring 7 and the low side of support pressure ring 12
Second holding tank 62.Wherein, support isolation ring 7 and support pressure ring 12 and support outer ring 5 can be split type, be also possible to
Integral type.It is processed into the split type installation convenient for fluting disc spring 6.
Intermediate shaft assembly includes jackshaft 8, jackshaft upper press cover 9 and jackshaft lower cover 10, and jackshaft 8 is concentrically disposed with
In support outer ring 5, jackshaft upper press cover 9 is coaxially covered from upper end to be pressed on jackshaft 8.
Similarly, jackshaft lower cover 10 is coaxially covered from lower end and is pressed on jackshaft 8, and passes through intermediate axis connection bolt
11 are fixed on jackshaft 8.Also, the 4th holding tank 64 is circumferentially formed thereon between jackshaft 8 and jackshaft upper press cover 9,
Third holding tank 63 is circumferentially formed thereon between jackshaft 8 and jackshaft lower cover 10.Be not precluded herein jackshaft 8, in
Between axis upper press cover 9 and jackshaft lower cover 10 be integral type.
As shown in Fig. 2, being arranged on intermediate shaft assembly there are two disc spring 6 of slotting, the diameter of one of fluting disc spring is inside
Side is arranged in third holding tank 63, and radial outside is then arranged in the first holding tank 61.Similarly, another fluting disc spring
6 radially inner side is arranged in the 4th holding tank 64, and radial outside is then arranged in the first holding tank 62.Disc spring 6 of slotting
Floor map is as shown in Figure 3.
Through the above structure, two panels fluting disc spring is connected in parallel, and is on the one hand doubled structural-load-carrying capacity, is on the other hand made
Structure has certain resistance to capsizing.
Cross shock insulation mechanism includes connecting bracket (upper cross brace 1 and lower cross brace 4) and four pairs of arc spring plates.
Wherein, upper cross brace 1 and lower cross brace 4 are all the form of right-angled intersection, upper cross brace 1 and lower cross-shaped
Frame 4 is between the upper and lower every setting, also, in the through-hole 91 for being provided centrally with axis vertical of upper cross brace 1.In upper cross brace 1
A curved arc spring plate 2 is provided between the corresponding cross end of lower cross brace 4, and it is along cross end
What direction was bent outwardly.Specifically, one end of arc spring plate 2 is connect with a cross end of upper cross brace 1, arc
The cross end connection corresponding with lower cross brace 4 of the other end of spring plate 2.And the centre of arc spring plate 2 (is only among signified
Refer to the part between both ends, do not imply that the middle position of stricti jurise) then along cross end, direction is bent outwardly.
Jackshaft upper press cover 9 is the form that upper diameter is less than lower diameter, so that upper part is from upper cross brace 1
Through-hole 91 in be pierced by the upper surface of cross brace 1 upwards, and its underpart is then stopped by the lower end surface of upper cross brace 1.
Also, 5 top of support outer ring is linked together with upper cross connecting bracket 1 by bolt 13 and nut 15, so as to connect
Complete shock insulation work.Also low minimum than rigidity in two shock insulation parts of the rigidity of whole device.
Illustratively its working principle below: lower cross brace 4 is bolted with foundation, is led to by shock insulation object
Connection bolt is crossed to connect with 9 upper end of jackshaft upper press cover.Load is transmitted to two panels parallel connection fluting disc spring 6 by intermediate shaft portion,
Then support outer ring 5 is passed to by the first holding tank 61 and the second holding tank 62, then upper connection branch is transmitted to by support outer ring 5
Frame 1 is transmitted to lower cross connecting bracket via four pairs of arc spring plates, then is transmitted to basis.
Wherein, as shown in Figures 4 to 6, the ratio of slotted section height H when fluting 6 uncompressed state of disc spring and thickness t
When close to 1.4, increases its vertical direction load-displacement relation curve as vertical direction loads and just will appear horizontal (or connect
It is close horizontal) section.In the horizontal segment limit, disc spring is compressed downwardly, but payload is basically unchanged, and device rigidity is close
Zero, i.e., so-called quasi- zero stiffness characteristic.Nondimensional displacement-stiffness relation the characteristic curve for disc spring of slotting is as shown in Figure 6.Two bullets
Structure global stiffness is also smaller than rigidity the smallest in the two when spring is connected.Use disc spring shock insulation mechanism and cross shock insulation mechanisms in series one
Work is played, structure global stiffness is close to standard zero when device steady-state operation；When by impact loading, due to the row for disc spring of slotting
Journey is generally less than 5mm, and fluting disc spring is compressed to extreme position (fluting disc spring carrying reaches capacity), by cross shock insulation mechanism list
Solely resist remaining vertical impact and lateral tipping load.
In one alternate embodiment, the ratio of the height H and thickness t of slotted section when fluting disc spring uncompressed state
Between 1.39~1.41.
In one alternate embodiment, the radial groove for disc spring of slotting radially becomes larger from inside to outside.
In one alternate embodiment, the outside spacers of each arc spring plate 2 are provided at least one curved arc
Shape spring plate.And the arc spring plate in outside is bigger than the radian of the arc spring plate 2 of inside.
In one alternate embodiment, the both ends of the arc spring plate of inside are connected to the lower end surface of cross brace 1
On the upper surface of lower cross brace 4, the both ends of the arc spring plate in outside are connected to the upper surface of cross brace 1 under
On the lower end surface of cross brace 4.
In one alternate embodiment, the both ends of arc spring plate pass through bolt 13 and spring plate tabletting 14, nut 15 respectively
It is connected on the corresponding cross end of cross brace 1 and lower cross brace 4.
In one alternate embodiment, the jackshaft 8, jackshaft upper press cover 9 and jackshaft lower cover 10 have axial
The hole being sequentially communicated.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of quasi- zero stiffness earthquake isolating equipment, which is characterized in that including disc spring shock insulation mechanism and cross shock insulation mechanism,
Disc spring shock insulation mechanism include mounting assembly, intermediate shaft assembly and fluting disc spring,
Mounting assembly includes the cylindric support outer ring of upper and lower opening, and intermediate shaft assembly includes being concentrically disposed at support outer ring
Interior jackshaft, at least one fluting disc spring are set on jackshaft, also, the radially inner side insertion of the fluting disc spring is intermediate
On axis, radial outside is embedded on support outer ring；
Cross shock insulation mechanism includes horizontal and between the upper and lower every upper cross brace, the lower cross brace being correspondingly arranged,
Also, in the through-hole for being provided centrally with axis vertical of upper cross brace, the both ends of four arc spring plates are respectively with upper ten
The corresponding cross end connection of word bracket, lower cross brace,
Jackshaft is pierced by the upper surface of upper cross brace, also, the top of support outer ring upwards out of upper cross brace through-hole
It is connected to the lower section of cross connecting bracket.
2. quasi- zero stiffness earthquake isolating equipment according to claim 1, which is characterized in that
Mounting assembly further includes support isolation ring and support pressure ring, and the bottom end of the support outer ring is in side is extended radially inward
Shoulder, support isolation ring and support pressure ring successively coaxially cover in support outer ring from the bottom to top, also, in support isolation ring
Form the first holding tank between low side and the upper end of the interior shoulder, support isolation ring top and support pressure ring low side it
Between form the second holding tank,
Intermediate shaft assembly further includes jackshaft upper press cover and jackshaft lower cover, and is formed between jackshaft and jackshaft upper press cover
Four holding tanks form third holding tank between jackshaft and jackshaft lower cover, fluting disc spring is two,
The radially inner side of one fluting disc spring is arranged in third holding tank, and radial outside is then arranged in the first holding tank,
The radially inner side of another fluting disc spring is arranged in the 4th holding tank, and radial outside is then arranged in the second holding tank.
3. quasi- zero stiffness earthquake isolating equipment according to claim 1, which is characterized in that the fluting portion of at least one fluting disc spring
The ratio of the height H and thickness t that divide are between 1.39~1.41.
4. quasi- zero stiffness earthquake isolating equipment according to claim 1, which is characterized in that the groove edge of at least one fluting disc spring
It is radial to be gradually increased from inside to outside.
5. quasi- zero stiffness earthquake isolating equipment according to claim 1, which is characterized in that the outside of each arc spring plate also between
Every being provided at least one arc spring plate.
6. quasi- zero stiffness earthquake isolating equipment according to claim 5, which is characterized in that at the both ends point of the arc spring plate of inside
It is not connected on the lower end surface of cross brace and the upper surface of lower cross brace, the both ends of arc spring plate on the outside connect respectively
It connects on the upper surface of upper cross brace and the lower end surface of lower cross brace.
7. quasi- zero stiffness earthquake isolating equipment according to claim 6, which is characterized in that
The both ends of each arc spring plate pass through bolt respectively and spring plate tabletting is connected to cross brace and lower cross brace
On corresponding cross end.
8. quasi- zero stiffness earthquake isolating equipment according to claim 2, which is characterized in that
The jackshaft upper press cover is the form that upper diameter is less than lower diameter, so that upper part is pierced by upper ten from the through-hole
The upper surface of word bracket, and its underpart is then blocked in the lower section of cross brace.
9. quasi- zero stiffness earthquake isolating equipment according to claim 2, which is characterized in that
The jackshaft, jackshaft upper press cover and jackshaft lower cover have the axial hole being sequentially communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820536656.9U CN208364672U (en) | 2018-04-16 | 2018-04-16 | A kind of quasi- zero stiffness earthquake isolating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820536656.9U CN208364672U (en) | 2018-04-16 | 2018-04-16 | A kind of quasi- zero stiffness earthquake isolating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364672U true CN208364672U (en) | 2019-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820536656.9U Expired - Fee Related CN208364672U (en) | 2018-04-16 | 2018-04-16 | A kind of quasi- zero stiffness earthquake isolating equipment |
Country Status (1)
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| CN (1) | CN208364672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506413A (en) * | 2018-04-16 | 2018-09-07 | 沈阳远大装备科技有限公司 | A kind of quasi- zero stiffness earthquake isolating equipment |
-
2018
- 2018-04-16 CN CN201820536656.9U patent/CN208364672U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506413A (en) * | 2018-04-16 | 2018-09-07 | 沈阳远大装备科技有限公司 | A kind of quasi- zero stiffness earthquake isolating equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 |